I think I sort of know the answer but I'm still wondering how I can achieve what I want to achieve. I basically want to use the stored 'work' in the compressed air can to pressurize a different container and while doing so, taking in particulates from the ambient air to be contained into the new container. I tried this with a can of compressed air computer cleaner (flurocarbons) and a container of a gallon of milk, the pressurization was fine but the 'sucking' did not occur. I believe it is because the pressure in the new container is more than the ambient pressure, also without valves perhaps my idea has no hope of working... This device is based on the atomizers of perfume bottles...what am I not understanding? The secondary container (gallon of milk) is not equal to the compressed air can pressure, even starting from the beginning (ambient pressure in milk container) and starting the pressurization process, there is no 'vacuum effect' noticeable on the end of the perpendicular tube relative to the parallel high velocity flow... why? WHY!!! WHY!!!!! When I tried this, there was some water in the gallon of milk container. Anyway, I'd appreciate the help.