Hungry? Why is it so hot to recruit delivery people to wear masks?

It's easy to get tanned on a hot day, and when riding a small electric car, the road is dusty, so they will choose to wear a mask to prevent sun and dust. However, wearing a traditional mask does increase the sultry feeling, and may even hold your breath, so you can actually try the kind of nasal plug that is directly stuffed in your nostrils, which is invisible and relatively comfortable and breathable.