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.
In summary, alcohol can make you feel warmer because it increases the blood flow in the skin, but it does not likely increase your body temperature; it can even decrease it.
1) A 1994 review article Alcohol ingestion and temperature regulation during cold exposure concludes that in cold environment alcohol lowers core body temperature.
Alcohol can impair ...
There's one vaccine composition for the southern hemisphere and one for the northern hemisphere each year.
The WHO publishes the composition recommendations.
For example, the composition for the 2019/2020 northern hemisphere winter season was:
an A/Brisbane/02/2018 (H1N1)pdm09-like virus;
an A/Kansas/14/2017 (H3N2)-like virus;
a B/Colorado/06/2017-like ...
According to the little number on the lower left, this is from 2012. The situation is worse than I expected in Europe. Also, there is a map from the states:
It will be so cool to ...