what is that distinctive smell just before it rains?
401158
Contrary to popular belief, the smell that comes before rain is 2-decanone, and not ozone.  The 2-decanone is released by the rapid increase in humidity just prior to rain.  We do, however, smell ozone in the air during a heavy thunder and lighting storm.  And the smell in the air after rain is the smell of actinomycetes, a form of bacterial spores that the rain on the ground releases.
771527
Air freshener and a match.
1106514
It would be a ghostly smell
239986
The smell of a fresh cut grass.
254960
It's a chemical reaction between the materials used in country roads and natural raindrops.  The drops gather together (congeal) and become frogs.  Where I grew up it was suburban city concrete sidewalks and worms.
19880
Its a thing that smells like cow doo doo
293854
Rain forces down cooler air from the atmosphere.
1035134
The Atmosphere is hot(~~)
997763
Go walk around in some fog. Fog is a cloud. Basically you feel moisture.
1159186
It's curry and garlic. Arabic and Indian food can often make you kind of "smell like it"
116559
In smell yes ortherwise ?
872866
jasmine, lavender, orchids, just about anything that gives off a huge smell..\nI can remember when I was little (11yrs old) I took a family trip to Hawaii.. Most all hotels have open reception areas to allow the breeze to flow through.. You wouldnt believe the smell of the flowers in the morning. It was so strong and vivid, it almost smelled fake.. I can remember hating the old perfume "jungle gardenia" that old women slather all over.. But if you are in Hawaii, you can appreciate that perfume much more. It smells like that.. Everywhere there.. Amazing..
458303
from the humidity  in the  air
706897
Your olefactory senses are working....
430794
scent and color. Insects see color.
619207
Dusk. It's just so different... poetic. Specially if it's humid or rainy.\nThere's nothing as wonderful as arriving to your house after a  hard, long day, just to be able to sit there to read a book, see the slow dissapearance of daylight, and hear the sounds of rainfall and nature.
529822
the "rain" is sulfuric acid.