Thank you all for very different ideas!
Allow me not to quote each (I don't know how).
I see everything falls into these categories:
- I have a cardiac condition
- I have an allergy to something
- I have a reaction to pipe tobacco (Perique, Latakia)
Also, some comments:
- Copperhead, yes, when searching for "feeling bad after tobacco pipe" smth half of links are from this forum, and all about nicotine poisoning
- BingBong, no, is this blend particularly monstrously heavy?
So, I don't think I have any heart problems, I in fact enjoy jogging, calisthenics and kettlebell a bit, I am under 40.
Also, seems clear that since pipe tobacco and process is lighter than cigs, I probably can't have nicotine poisoning from pipe, but not from cigars.
By the way! I do get that lightheaded feeling smoking a whole cigar, and it's something different. No sleeping for hours, no dark circles under eyes.
I swear I thought this might be inhaling something burnt, like maybe poor quality lacquer, paint, mouthpiece (??)
Or self-hypnosis of X-men level?
Thanks again, I'm still hoping to crack this riddle