That’s where nasal sprays come in—at least, in theory. (Any protection offered by the sprays would be enhanced by also wearing a mask, since you do not spray your mouth.) ...

The spray, which comes in 100ml bottles, has no consistent branding. It is made by Lion Care Products but some bottles say Body Art Supplies or just carry the name of the piercing studio.

A pharmaceutical company was handing out free samples of their naloxone nasal spray at a Surrey, B.C., SkyTrain station on Wednesday — but health officials are skeptical about the approach.