Dear
@Makas,
thank you for joining us in the community.
As for your question- yes you can apply at the airport transit in Brussel for asylum.
The exact procedure is outlined under the following link:
https://***.asylumineurope.org/reports/country/belgium/asylum-procedure/procedures/border-procedure-border-and-transit-zones
If more clearification in regards of the process is needed, please do not hesitate to address the community.
Best regards,
Nilab