Seltzer rhymes with:
meltzer, zeltzer, meltzer, waltzer, zeltzer, amritsar, bautzer, blitzer, butzer, conatser, critser, croitzer, fetzer, fitzer, howitzer, katzer, meltzer, metzer, planitzer, pulitzer, schertzer, schmitzer, schwarzer, schweitzer, setser, sweetser, switzer, waltzer, wintzer, wurlitzer, zeltzer
Seltzer sounds like:
schlotzhauer, schoolteacher, skulduggery