Back in the day when I worked desktop support, we would use a lot of canned air. And when they added bitterant to that stuff in order to keep kids from huffing it, it became almost unusable for its intended purpose because it turns out that nobody wants to have to breathe the bitter air after they clean out a PC. So, I went to the office supply store and sampled some different brands to see which ones didn't add a bitterant. The irony that their anti-huffing measure led to me (essentially) huffing canned air at the store was not lost on me.
And if you don't want to buy an air compressor, an electric computer duster saves you money in the medium and long term. I haven't bought a can of compressed air in years.
