I usually take reactine. I start when I see pluisjes flying around, which is now. Swallow those pills for 3 weeks. And normally I kind of survive. Sometimes I still have to cry. And I definitely use 21 packages of paper tissues.

If it gets to bad I also swallow loratadine. The combination of 2 pills seems to work better.

There is also the possibility of getting injections. But that takes like 1 or even 2 years before it works. And looks like you could have to many fevers.

Last but not least, you could try to tape your nose. Then the grass, dust, etc won't go in.
A better option for tape is Vaseline, everything will stick to the Vaseline then instead of entering your body.

Always use lots of Vaseline and then go to your work 😁😬