Well-sealed helmets have a certain anti-droplet physical barrier effect, which can be considered when supplies are scarce, but it is not recommended to wear alcohol disinfection with them. The new coronavirus is mainly transmitted through droplets and contact, when the individual around the source of infection cough or sneeze, the helmet can play a role in isolating part of the droplets, if possible, or need to wear a mask. 75% alcohol can effectively kill the virus, but alcohol is flammable, often sprayed outside the open flame may cause safety problems, should be used with caution, you can carry a no-rinse containing 75% alcohol Alcohol-free disinfectant can be carried and disinfected in a timely manner when in contact with shared objects.