The sensor chamber on a smoke detector is very sensitive, which is what makes it reliable. Unfortunately, this same sensitivity could cause it to accidentally be set off when it picks up traces of dust, steam, or chemical fumes.

It’s important to choose a tape in an eye-catching color so you won’t accidentally forget about it and leave it on after completing your chores. Avoid using clear or plain white tape. These are more likely to go unnoticed.

Consider writing yourself a note or setting an alarm on your phone to remind you to remove the tape just in case.

A grocery bag could also work, as long as there are no holes in the surface. If you use a bag that’s too big, there’s a chance that the material will bunch up around the edges, allowing dust and steam to find their way inside.

If you don’t have a rubber band handy, wrap the top of the bag with tape to seal it off. Check to confirm that the bag is secure before you engage in any activities that might produce smoke, steam, or dust.

You can buy a single disposable shower cap or a package of multiple caps at any supermarket or drugstore for just a few dollars. If you’re unable to track down a shower cap at the store, one alternative is to use the kind of stretch-to-fit plastic or cotton covers that are designed to go over food dishes. [6] X Research source

To prevent the cap from slipping off, making sure the elastic band is resting over the top of the unit between the housing and the ceiling.

If you reuse the same shower cap too often, it’s possible for mold to set up inside. Throw away your shower cap if it begins to look dirty or dingy. Overall, a shower cap makes a safer cover than tape, since there’s a slim chance that you’ll fail to notice it the next time you walk by.