Ionizers rhymes with:
colonizers, organizers, colonizers, organizers, advertiser's, advertisers, advertisers', analyzers, appetizers, colonizers, exercisers, fertilizers, franchisers, itemizers, merchandisers, mobilizers, organizers, rittereiser's, stabilizers, sterilizers, supervisors', sympathizers, synthesizers, tranquilizers
Ionizers sounds like:
imageries, inaccuracies, inaccuracy, incisors, increase, increases, incurs, ingrassia, injures, injuries, injurious, inquires, inquiries, insurer's, insurers, insurers', insures