toxygen 

heavily polluted air

We loved the fresh air in the countryside, but what we inhaled in Beijing was pure toxygen.

toxygen by Yolfsie June 25, 2018

toxigen 

Any substance that has the ability to intoxicate a person

I think it's time I topped up my toxigens

toxigen by stealth February 4, 2004

Toxigen 

adjective

Toxigenic in the German language.

noun

Subspecies of Protogen; a biohazard Protogen, especially with the capability of harming human health and the environment.

Toxigens are causing harm to the environment and our health.

Toxigen by SageToxigen November 26, 2022