Air Pollutants

noun a colorless, pungent liquid used as a solvent and in the manufacture of acetic acid

• Acetic aldehyde, also known as ethanal, is a colorless liquid with a pungent odor.
• I spilled some acetic aldehyde in the lab and now the whole room smells funny.
• I accidentally knocked over the bottle of acetic aldehyde and now it stinks in here.
• His words hit me like a whiff of acetic aldehyde, sharp and unpleasant.

noun a colorless liquid aldehyde with a suffocating odor, used as a herbicide and in the manufacture of plastics

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• Acrolein is a highly reactive and toxic organic compound commonly used in research laboratories.
• I heard that acrolein is really bad for your health if you inhale it.
• Dude, stay away from that acrolein stuff, it's no joke.
• The acrolein of gossip spread quickly through the small town, causing chaos and hurt feelings.