Storing liquid chlorine near boiler

I have a "pump" room in my garage which holds my pool equipment - pump, filter and piping.
In the same room I have my houses heater boiler fixed on the wall.

I will be setting up a chlorine auto feed system and I was planning on leave a large 25L chlorine drum in the corner of the room.
Is this safe to do?

Room size is approx. 2.5m x 1m
 
My concern would be ventilation more then proximity to the boiler.

Will the chlorine smell get into the living spaces?

Lets see what @JoyfulNoise has to say.
 
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