I've been experiencing a mild irritation on the tip and middle of my tongue. I don't think it is tongue bite because if I puff to hard I get a much different burning sensation. I'm smoking slow and it almost feels like I've let ice cream sit on my tongue for too long. I've been smoking Mac Baren vanilla flake and navy flake during the day as well as Mac Baren plum cake after dinner. The flavor is there for less than a minute and then all I taste is "ice" with the irritation. Does anyone have any thoughts on this?