How Clean Is Your Hotel? | Travel

1. A musty or ‘dirty socks’ smell

“You’ll know it when you smell it,” says Rajiv Sahay, Ph.D., the director of the Environmental Diagnostics Laboratory at Pure Air Control Services, an indoor air quality firm. “It’s a pungent smell, like when you take your socks off. This is indicative of contamination, or especially, bacteria.”

That smell is often a signal that your room is poorly ventilated. And poor ventilation may not inspire confidence that there aren’t also coronavirus particles from the last person who stayed there lingering in the air. The Centers for Disease Control and Prevention says aerosol particles