1) Wear masks with nose-bridge wires to ensure a tight seal.

Covering your nose is perhaps the most critical element of wearing a mask. A recent study found that nasal cells were more likely to become infected with and shed coronavirus than cells in the throat or lungs.

2) The CDC's "knot and tuck" technique reduces air leaks.

Start by folding the mask in half, edge to edge. Then tie both ear loops so the knots are as close to the mask as possible. Finally, unfold the mask and tuck any extra fabric beneath the knots.

3) Double masking will block more than 92% of coughed particles.

The surgical mask acts as a filter while the cloth mask helps to ensure a tight seal.