What is a one-sentence summary of the following article?
If you know you need to wear an N95 mask, shave off all facial hair. It can get in the way of the mask and prevent a tight, sealed fit, which will compromise the effectiveness of the mask. If it's an emergency situation and you don't have time to shave, fit the mask on as best you can. Use soap and water and dry your hands well so you don't get the mask wet. This will prevent you from accidentally contaminating your mask before you put it on. Place the mask in the palm of your hand so that the straps face the floor. Set it over your nose and mouth with the nosepiece fitting over the bridge of your nose. The bottom should go just under your chin. Try to touch only the outside and edges of the mask to keep it clean. If your mask has two straps, pull the bottom one over your head and secure it around your neck, just under your ears. Continue to hold the mask tightly against your face with the other hand. Then, pull the top strap over and set it above your ears. Set your first 2 fingertips on either side of the metal nose clip at the top of your mask. Run your fingers down both sides of the strip, molding it along the bridge of your nose. If your mask doesn't have a nosepiece, simply make sure the fit is tight and snug around your nose. N95 masks are not designed for children and won't fit correctly on them. Instead, keep children inside as much as possible if air quality is poor. Take extra precautions in case of flu outbreaks, such as having kids wash their hands before meals and after sneezing or coughing. You can also try using masks made specifically for children, although they won't be N95-designated. Don't use an N95 mask on children younger than age 17-18. Older teenagers can try on an N95 mask to test the fit and comfort. If it fits well and forms a tight seal, have them try walking around with it, paying close attention to any feelings of dizziness or difficulty breathing. If these symptoms occur, have them remove the mask and go inside.

Summary:
Trim your facial hair before wearing your mask, when possible. Wash your hands well before putting on your mask. Cup the mask in one hand and place it over your mouth and nose. Pull the bottom and top straps over your head. Mold the nose piece around the bridge of your nose. Look for alternate solutions for children.