Many have this problem which can make drivers prone to accidents as well as drunk driving

Research has shown that drivers suffering from acute pollen allergies are potentially as accident prone as drunk drivers, as just one sneeze at a speed of 100 km/h can drive blind up to 30 meters, according to data from the German agency TÜV.
While certain medications can help with symptoms like a runny nose and watery eyes, experts recommend checking integrated cabin air filters that keep out unwanted components from the air like pollen, dust, bacteria or allergens from outside.

While the filters are new, they prevent pollen and dust from entering the car cabin, but filters that have not been changed for a long time can become clogged and become a breeding ground for mold and other spores.

Both antibacterial and fungicidal filter coatings cease to be effective after a long period of use. Therefore, new filters should be checked as soon as the pollen concentration reaches its peak.

Experts recommend that filters in cars be changed every 15,000 kilometers and add that even drivers who do not cover such a high mileage should change them at least once a year to guarantee their efficiency, German experts recommend.

This is usually done as part of the technical inspection, recalls TÜV technical inspector Vincenzo Lucà. But if you’re forced to drive through pollen-filled areas every day, you may need to change your car.
There are only a few car models that allow owners to simply turn the filters off and on themselves. Most drivers will need to take their car to a mechanic for a replacement.

So-called activated carbon multifilters can be retrofitted in many vehicle models, although such an option is somewhat more expensive. Activated carbon filters, in addition to pollen and dust from outside, also protect against unpleasant odors and certain pollutants.

If you suffer from hay fever, try to avoid parking under trees during pollen season, otherwise when you return your car may be covered in flowers falling from the trees and therefore full of pollen.

To minimize allergy symptoms, you should avoid direct contact with pollen.

Once you’re outside, put the jacket in the trunk of your car so you don’t transfer pollen from it into the cabin of the vehicle.

Additionally, it is best to keep the windows closed while driving, as well as the sunroof, if the car has one.