Biohazard rhymes with:
haphazard, hazard, hazzard, haphazard, hazard, hazzard, blizard, blizzard, buzzard, edzard, gizzard, grizzard, haphazard, hazard, hazzard, izard, izzard, lizard, quizard, wizard
Biohazard sounds like:
bacardi, baccarat, bachert, backward, backyard, basurto, bechard, beckert, beckworth, bekaert, bessert, bickered, bickert, bickhart, bighearted, biscardi, bogard, bogart, bogert, boschert, boshart, bossard, bossart, bossert, bosshardt, bosshart, bosworth, bouchard, bozard, bozarth, buchert, bushard, bushart, bussard, bussert, buzard, buzzard, buzzword