Depending on the nature of the product (not dangerous, without any toxic vapors.)

He wished to observe the eruption at first hand, but ventured too close and was killed by toxic vapors from the crater.

They can be sources of toxic vapors.

Detection technologies for chemical warfare agents and toxic vapors.

It creates toxic vapors that could someday threaten 300 homes and small businesses.

They allegedly passed it around and took it home, potentially exposing dozens to mercury's toxic vapors.

Solvents are in closed systems, so no toxic vapors are let off in the atmosphere.

At one time, the landfill bubbled and spewed toxic vapors.

There is toxic dust, and toxic vapours are emerging from the lava.

Use of chemicals like these may produce some toxic vapours, and have a tendency to destroy wicks.