Started cleaning my PC today using a can of compressed air for office and hardware dust-off. I made sure to disconnect the PC from any cables or source of power, and made sure to not angle the can when using it, and I tested it before using it on my PC. However, when I started doing the inside of the PC I noticed that at random a small shower of some liquid form escape the can and quickly disappear once it lands on something. Is this normal or do I run a high risk of damaging my PC if this liquid end up on a component? Is it just gas in liquid form? My computer works just fine after using it and I made sure to not get any plugs loose. And finally is it normal that the computer smell like butane gas after finishing?