Some electronic air cleaners produce ozone, which can sometimes further irritate allergies.

Electronic air cleaners can produce ozone - a lung irritant.

"Shine sunlight on them and they can produce ozone."

It can also be used to produce ozone for water disinfection.

The commutator of the motor creates sparks which in turn produce ozone.

In the presence of sunlight, the nitrogen compounds produce ozone.

Replies: I think you can't hope to outdo the sun at producing ozone.

The second effect is that the oxidation of methane can produce ozone.

The immune system produces ozone as an antimicrobial (see below).

The "reactivity" of the exhaust, or its ability to produce ozone, has been cut 37 percent, the company said.