smoking pot, from my experience, never cigs
does he/she smoke? it might be something to do with that, or maybe the food they're eating isn't suitable for their body. hope this somewhat helps
That's weird.... I remember when I used to take Folic acid...that little tablet also caused like what appeared to be smoke coming out my mouth....not a lot but obviously I didn't drink enough water with it..and it could of been dissolving down my throat....Not sure...But it is strange