Not all the poisonous fumes can be smelled.
What is a poisonous fume?
A poisonous fume is a gas that is able to cause a health risk to a person. There are a lot of poisonous fumes such a thionyl chloride, CO etc.
Not all the poisonous fumes can be smelled. For instance, CO is an odorless, colorless gas yet it s poisonous.
Learn more about poisonous fume:https://brainly.com/question/1626816?
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