Passive voice is formed with the word ‘by’ not ‘of’. The verb ‘to comprise of’ can exist and have a different meaning that ‘to comprise’ or its passive ‘to be

Passive voice is formed with the word ‘by’ not ‘of’. The verb ‘to comprise of’ can exist and have a different meaning that ‘to comprise’ or its passive ‘to be comprised by’ - and have a different passive (to be comprised of). Like, the verbs ‘smell’ and ‘smell of’ do not mean the same thing, nor is one the passive of the other. - I smell roses - roses are smelled by me - I smell of roses - roses are smelled of by me Four very different meanings.