Citrus scents may make your home smell clean, but it may also permeate a cocktail of cancerous chemicals into the same air you and your family breathe. A team of researchers from BBC’s “Trust Me, I’m A Doctor” worked with Alastair Lewis, a chemistry professor from the National Centre for Atmospheric Science, to investigate the potential health hazards attached to lemony-fresh aromas. What they found may make you want to toss out your favorite candle and opt for a safer cleaning scent.