The pollen blocker "USB Pollen Blocker" is recommended for such people! It costs $ 56 (shipping not included) and is available on the online shopping site Fancy.com.
The "USB Pollen Blocker" is an item for people with hay fever who is very capable of blocking 99.9% (!) Of pollen by wearing it occasionally. There is a fan on the visor part, and when you connect it to USB, the fan will rotate and ventilate.
The visor screen size is 130x158 mm and weighs 194 grams. The material is made of nylon hood and plastic fan. The length of the USB cable is 140 cm.
The "USB Pollen Blocker" not only blocks pollen, but also blocks visibility and surrounding noise to some extent. If you wear this, you should be able to concentrate on your work! This is an item that I personally care about.
* All images are from Fancy.com