Carbon monoxide and Exhaust fumes

Carbon monoxide noun - An odorless very poisonous gas that is a product of incomplete combustion of carbon.

Exhaust fumes and carbon monoxide are semantically related. in colorless odorless toxic gas topic. In some cases you can use "Exhaust fumes" instead a noun phrase "Carbon monoxide".

Exhaust fumes noun - Gases ejected from an engine as waste products.

Carbon monoxide and exhaust fumes are semantically related. Sometimes you can replace phrase "Carbon monoxide" with "Exhaust fumes", this phrases are similar.