Here's a quick look at a Camera Vacuum product that was sent over by a Japanese company called Fujin. The cleaner attaches exactly like a lens and is designed to suck floating particles out of your camera body.
I think the keywords here are 'Floating Particles'. If you have a smudge on your sensor or something wet (mud), it's not going to be much help. But if you happen to be in a situation where there is a lot of dust, dirt, lint, etc it might be able to clear that out. But at a price of over $150 US, I personally don't think I have a need for something like this, but your needs may be different.
Here are some other videos from their YT page.
So I guess they are looking for more comments and feedback, feel free to leave your comments below.
Fujin Lens Camera Body Vacuum Cleaner
Emm
Post author@Blarg - The area where the filter is placed is where air is drawn in because of the difference in air pressure that is created. The center is where the air is blown out. It is basically just exchanging air, but it is filtering the incoming air.
Blarg
The camera body is airtight. I don't get how this device moves any air, which is what you need to remove dust. If you put this thing on the top of a jar that had dust in the bottom it would not be able to suck it out.
Emm
Post author@Mark - It's offered in a Canon EF mount. It will work on any Canon EF mount.
Mark
I have a metabones speed booster. Can I use it with that?
mike
at first I thought you were going to attach a wetvac hose to it. I feel like that would've been more effective.