Snake Room Ventilation

Hey guys got another quick question

I have an extra bedroom in my house that I use for a snake room. The room is quite small but fits a rack a tank and a bed right now. I plan to move the bed out and get some more racks in there. Currently, Im using an oil filled heater to heat the room and a ranco to regulate.

Whenever I step in the room, it feels quite warm and stuffy in there. Are there any recommendations regarding how to properly ventilate snake rooms so that there is no stagnant air? Do I need to open the door for a little bit every day to allow for fresh air to go in? Theres a small air vent in the room but it barely makes a difference.

Thanks

The only ventilation in my snake room is the air duct from the furnace. If you have the humidity right in a room heated to 80 degrees it is going to feel a bit stuffy. The is a difference between stuffy and stagnate though.