People with very sensitive noses are capable of smelling when it’s about to rain due to atmospheric chemicals reacting and creating ozone, which has a pungent, sweet smell. The thunderstorm’s downdrafts carry it from higher altitudes to nose level. – WTF Fun Facts
Source: https://www.scientificamerican.com/article/storm-scents-smell-rain/
WTF Fun Fact – Smell Incoming Rain
