odourless

About 0.09 uses per million words.

Meaning

1. adjective Having no odour.

   They were taken unawares and overcome when the room filled with a lethal, odourless gas.

Similar words

odorless without odour odor scent aromaless scentless fragranceless perfumeless fartless

Often followed by

and gas liquid powder or crystals kerosene as crystalline