All tobaccos will ghost a pipe. Every time you smoke a blend, some of its oils and volatile components are working their way into the cake and the wood of the bowl and shank. That's part of the seasoning process, part of the "breaking-in." This is the reason you can tell, by sniffing, what's been smoked in a pipe, but also the reason that a pipe delivers a richer smoke after years of use.
When you fill that pipe again, and heat it up through smoking, some of those volatiles will find their way into the smoke stream, and it takes very small concentrations of these molecules to influence the smoke's taste and aroma. Whether these ghosts are detrimental to subsequent smokes depends on a lot of factors, including whether or not you like the combination. For example, I cannot stand the interaction between aromatic tobaccos and latakia blends, so there's no way I'd ever smoke an aromatic in a pipe I've dedicated to latakia blends, or vice versa.
I actually enjoy the interaction between virginias and latakia blends, the "crossover smokes," so I have no qualms about sharing pipes between these two categories. To a lesser extent, I might even smoke a lightly aromatic blend in a VA pipe, or vice versa. (I'm not really big on aromatics, so this really doesn't ever become much of an issue for me, personally.)
But, if you repeatedly smoke a heavily sauced tobacco, such as the 1Q that has been mentioned, it will eventually ghost the pipe to the point where no amount of conventional exorcism will get rid of it. A friend of mine once got a pipe that had been smoked with Captain Black for a decade by its previous owner. My friend smoked hundreds of bowls of strong virginias in that pipe over the period of several years, and you could still smell the the Captain's effluvium in the smoke. (He said he couldn't taste it, but I suspect that had more to do with his tasting apparatus than it did with the pipe itself.)
So, you pretty much have to think about what you like, and what you can tolerate. Smoking the occasional bowl of something that's outside of your normal spectrum of tobaccos probably won't hurt, though it may interfere with a few following bowls. But, anything that is strongly flavoured will certainly leave its mark. For how long depends on what it is, how many bowls of it you smoke, and your sensitivity to it.
I guess the advice I would offer is that if you're worried about a tobacco leaving its signature in the pipe, you should probably not smoke it. If you really want to try it, cobs are a good choice, or clays. And, I agree. Condor is very tasty, but very tenacious.
When you fill that pipe again, and heat it up through smoking, some of those volatiles will find their way into the smoke stream, and it takes very small concentrations of these molecules to influence the smoke's taste and aroma. Whether these ghosts are detrimental to subsequent smokes depends on a lot of factors, including whether or not you like the combination. For example, I cannot stand the interaction between aromatic tobaccos and latakia blends, so there's no way I'd ever smoke an aromatic in a pipe I've dedicated to latakia blends, or vice versa.
I actually enjoy the interaction between virginias and latakia blends, the "crossover smokes," so I have no qualms about sharing pipes between these two categories. To a lesser extent, I might even smoke a lightly aromatic blend in a VA pipe, or vice versa. (I'm not really big on aromatics, so this really doesn't ever become much of an issue for me, personally.)
But, if you repeatedly smoke a heavily sauced tobacco, such as the 1Q that has been mentioned, it will eventually ghost the pipe to the point where no amount of conventional exorcism will get rid of it. A friend of mine once got a pipe that had been smoked with Captain Black for a decade by its previous owner. My friend smoked hundreds of bowls of strong virginias in that pipe over the period of several years, and you could still smell the the Captain's effluvium in the smoke. (He said he couldn't taste it, but I suspect that had more to do with his tasting apparatus than it did with the pipe itself.)
So, you pretty much have to think about what you like, and what you can tolerate. Smoking the occasional bowl of something that's outside of your normal spectrum of tobaccos probably won't hurt, though it may interfere with a few following bowls. But, anything that is strongly flavoured will certainly leave its mark. For how long depends on what it is, how many bowls of it you smoke, and your sensitivity to it.
I guess the advice I would offer is that if you're worried about a tobacco leaving its signature in the pipe, you should probably not smoke it. If you really want to try it, cobs are a good choice, or clays. And, I agree. Condor is very tasty, but very tenacious.