"Have you ever wondered about what causes the distinct smells you detect in the air before, during and after a rainfall?" "Scientists say it's a combination of ozone, petrichor and geosmin." Interesting?

"Petrichor is caused by oils derived from plants, primarily leaves, that accumulate over dry periods," said Jeff Weber, a meteorologist with the University Corporation for Atmospheric Research Unidata Program Center." Interesting?

Ozone, which has been described as sweet and pungent-smelling, is brought down by a storm's downdrafts from higher altitudes to nose level. Its smell can also be detected following a storm. The pleasant scent that fills the air during a rainfall as raindrops come into contact with the ground is called petrichor, and the term was coined by Australian scientists Isabel Joy Bear and Richard Thomas in 1964. Petrichor is caused by oils derived from plants, primarily leaves, that accumulate over dry periods," said Jeff Weber, a meteorologist with the University Corporation for Atmospheric Research Unidata Program Center." Interesting?

"The smell of petrichor has been described in a variety of ways, including earthy, musky and fresh, and tends to be stronger after a lengthy period of no rainfall, he added." Interesting?