Please choose the correct solution to the question: Clean your bathroom exhaust fan

Solution1: Turn off your exhaust fan. Use a can of spray paint to clean the fan grill and force the dust to be be painted onto the fan surface.

Solution2: Turn on your exhaust fan. Use a can of compressed air to clean the fan grill and force the dust up into the exhaust pipe.

Answer format: solution1/solution2
Answer: solution2