Anycubic M5S PRO includes combo heater/filter unit placed inside the chamber, it works great and helps to heat the environment to improve our prints and clean the air from VOCs.
In some circumstances could blow dripping resin all over the vat and inside the lid.

This piece, printed using ASA/ABS or resin with good temperature specs at your convenience, will redirect the airflow to the resin tank, reducing any potential blowing of dripping resin.

A simple but useful design could minimize this problem if you are affected.