Hi
Thanks for writing to the forum!
Personally I do not think it is due to nicotine allergy. Both partners being smokers could be just co-incidental. It could be due to friction or rough handling. It could also be allergy to latex of certain brands of condoms, though this is rare.
I have enumerated the possibilities that come to my mind right now. It is difficult to comment beyond this at this stage. Please let me know if there is any thing else and do keep me posted. Take care!
i think what you are experiencing is they lip being puched inside and pulled out as they inter you,,this can cause your labia to swell some,,,remember these parts of your body are delicate and all people are different,so sometimes a litte "roug" sex or if there kinda large all plays a role,but as far as the nicotine,thats no way even possible to do with the lip issue.