it expels odor is incorrectly written and should be written as "Expelling bad smell." being its meaning: Expel is transitive verb, 2nd conjugation; and how EXPELS is third p. of singular of the present indicative. Remove or outputting something of an interior.
it expels odor is incorrectly written, and should be written as "expel" being its meaning: The phrase is very clear. At most, it occurs to me that who see unknown verb " expel ". My suggestion is to look for the definition of " expel ".