headaches:
"Exposure to second hand smoke, even for brief periods, can cause eye, nose and throat irritation. It can also cause headaches, dizziness, nausea, coughing and wheezing. Second hand smoke can seriously intensify symptoms in people with allergies or asthma."
- http://www.stopsmokingcenter.net/education/secondhand.aspx
clearly... im fucked.
but now i know why i get so many at work.
and why i hardly get them when i have days off.
yep. makes sense.