Asthmatics rhymes with:
cosmetics, metics, aesthetics, agrigenetics, anesthetics, athletics, bionetics, cadnetix, cognetics, cosmetics, diabetics, dianetics, diuretics, esthetics, genetics, helionetics, intermagnetics, kinetics, magnetics, metics, odetics, pharmakinetics, phonetics, prosthetics, synthetics
Asthmatics sounds like:
accident's, accidents, assistants, asthmatic, astounds