Smokeless rhymes with:
backless, diskless, harkless, luckless, necklace, nicklaus, nickless, reckless, riskless, thankless
Smokeless sounds like:
samojlik, semigloss, senegalese, senseless, shankles, shingles, singles, siniscalchi, smigelski, smigielski, snackwell's, snackwells, snakelike, sunglass, sunglasses