“Do regular mouth guards work just as well in and out?

People put them out with the white side ", is one of the questions that came in from your viewers.

- According to an expert I spoke to, they protect less against splashes if they are turned inside out.

They are made of different layers and at the end there is a layer that will protect against liquid being absorbed by the underlying layers.

But if they are not exposed to splashes, they work just as well to filter particles even if they were turned inside out, says Josefin Lennen Merckx, medical reporter at SVT.

Many of the questions are about the omicron variant - In the video, Josefin Lennen Merkcx provides answers to questions from your viewers.