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No, you can't catch a cold from plants. You can, however, inhale lots of grass pollen because...
we would run around and lots of dried grass dust would get kicked up.
The second clue it's a pollen allergy is the short nature of it. Colds last longer than 24 hours.
http://www.nhs.uk/conditions/Cold-common/Pages/Introduction.aspx
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Common cold, which is an acute viral infection of the nose, is rarely associated with fever in adults (Canadian Medical Association Journal ; DPHHS Montana).
Allergic rhinitis does not usually cause fever; it's not mentioned as a symptoms on major clinical websites (Emedicine ; Mayo Clinic ; MedlinePlus). News In Health says allergic rhinitis "never" causes ...
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