Here's what rhymes with polio.
oleo no so know go though low show co row tho fo foe ho lo bo doe dough mo po ro toe wo woe folio tow yo beau ceux faut goe hoe jo ko sew soe vo beaux cho dau mow noe roe sho yeux zo rho whoa doh resew although ago flow ratio blow grow radio slow snow throw pro glow quo audio fro crow patio stereo thro bio uno floe rodeo topos tuo bro stow throe trow sloe foreknow regrow kayo pekoe borzoi romeo tallyho schmo schmoe below embryo plateau studio bestow chateau hello portico forego forgo nouveau propos tableau aglow aliquot cameo dicho spatio tableaux chateaux dunno plateaux trousseau adagio chapeau kapok tarot turbot deathblow bandeau gateau chapeaux gateaux trousseaux overthrow portfolio buffalo overflow calico dynamo apropos domino escrow outgrow siglo piccolo overgrow matzoh fatso undergo indigo bungalow politico vertigo medico mistletoe presidio afterglow oregano pistachio undertow pompano mustachio microdot moustachio impresario braggadocio archipelago pianissimo generalissimo