Toxic, perhaps.
That is 'poisonous' .
dangerous, Pernicious, malicious
calamitous
harmful, damaging
The noun form of the adjective poisonous is poisonousness.The word poisonous is the adjective form of the noun poison.
well ya it has poision in its name
no!
Harmful is an adjective.
NO
obviously
you could say 'quickly profused' if its spreading in a bad or harmful way then the word is 'insidious'
Yes it is. May cause respiratory and digestive tract irritation. May be harmful if swallowed. Causes eye irritation. May cause skin irritation.