It’s a simple way to keep homes fresh and mould-free, and has caught on in the US. But there are a few potential downsides ...

Name: House burping.

Age: New to America, ancient in Germany.

Appearance: Breezy.

House burping? Obviously, I try to burp at home and not in our open-plan office, but it depends on what I’ve had for lunch. Sometimes it just has to come out, you know? That’s more information about your digestive tract than I need, given we’re talking about whether houses themselves need burping.