Assertion: asthma's trigger | /r/HasProperty | cigarette smoke
Facets:
Source sentences:
text: Common triggers include exercise, cigarette smoke, colds and flu, and allergens in the air (e.g. grass pollen).
text: Common triggers include cigarette smoke, allergies, and exercise.
text: Other possible triggers include viral infections and irritants (such as cigarette smoke or strong odors).
text: Other triggers include irritants like cigarette smoke and stimuli such as exercise, cold weather and infections.