In the context of the fifth paragraph of the passage the comment by Shiraj they

Other - adjective

plants - plural noun

attract - verb

insects - plural noun

by - preposition

producing - gerund

smells - plural noun

Explanation:

This sentence contains most parts of speech. It's written in active voice with a naming part or subject composed by a noun phrase (adjective + noun) hence, 'other insects'. The telling part of predicate has a main transitive verb (attract). This means, the sentence takes on a direct object (insects). The end of the predicate is a prepositional phrase (by...).