Sounds like you may have some mould or fungi. Mould spores do not burn up in the smoke. They make it to your lungs and grow.

I had a very bad case last year and near impossible to get rid of and even worse trying to explain or get a doctor to understand. There are no test to check.
If this is the case and antibiotic is the only way. Amoxacillian in the strongest dose you can get. I took it for 2 weeks and thought it was gone only to find it was not enough. You need to take it for a month or like I did the second time. Take it every other week untill you have taken it 6 weeks. That takes 12 weeks all together.

If this is not it then sounds like you turned allergic to weed and should stay clear of it.
LOC NAR on probation Reviewed by LOC NAR on probation on . getting sick from marijuana well i have been smoking for about a year now, and on 420 this year i smoked a bit to much and got really sick and i was sick for about the next 3 days. my friends all told me i got to the "scary place" a place where you go when you smoke to much weed. so i stopped for about a month and i tried it again and just merely the smell made me nautious so i ignored it and took a hit from a waterfall bong "a little baby hit" and i held it in and blew out and immediately i got a huge head ache and my Rating: 5