Dioxins are emitted during the combustion of

Dioxins are released when chlorine-containing plastics such as PVC are burned.

Diesel combustion emits soot and nitrogen oxides but is not the classic dioxin source here.

Coal burning yields sulphur oxides and ash rather than the noted dioxins.

Biomass burning is a minor dioxin contributor compared with plastic.

Chlorinated plastic feedstock is what generates dioxins on combustion.

Dioxins are persistent, highly toxic and accumulate in fatty tissue.