Symptoms associated with

Exposed (n = 20)

Unexposed (n = 50)

OR (95% CI)*

Eye irritation or inflammation

8

10

2.7 (0.9 - 8.6)

COPD

6

9

1.9 (0.6 - 6.3)

Bronchoconstriction

6

11

1.5 (0.5 - 4.824)