How to quickly deal with small holes in chute canvas?

If people can enter the lower part of the chute, it can be handled like this: wrap a porous ventilating plate of appropriate size with 2 to 3 layers of filter bag material, not too tight, to ensure that the fan can bulge properly when it is turned on, and fix it on the ventilating plate. Then use a suitable method to fit it close to the hole in the breathable layer, and use a suitable method to fix the breathable plate on the air chute shell. When the air chute fan is turned on, the bulging filter bag will fill the hole in the breathable layer. If people can enter the lower part of the chute, this can be done like this: Wrap a porous ventilating plate of appropriate size with 2 to 3 layers of filter bag material (not too tight) to ensure that the fan can bulge properly when it is turned on, and fix it on the ventilating plate , and then use a suitable method to close it to the hole in the breathable layer, and use a suitable method to fix the breathable plate on the air chute shell. When the air chute fan is turned on, the bulging filter bag will fill the hole in the breathable layer.