Homebrew PCBs

Hi all

I am etching with Muriatic Acid and Hydrogen Peroxide, so far I am happy with the speed and quality of the etch but I am concerned with the fumes. It's ok to etch the boards outside this time of year in the north east but I will have to work in a closed garage in the winter. What can I do the limit or eliminate the fumes from the process?

AP