The opening line sets up the tone and humour. The first metaphor, the vacuum cleaner has multiple associations.

A vacuum cleaner is controlled by the person using it, so it could imply that he wants to be dominated by the woman, to do her bidding, to be helfpul — to ‘breathe in’ his lover’s problems. Another possibility is that this is a masculine crusade of wanting to take care of things, to ‘sort out’ the dust and detritus of the woman’s life.

The vacuum cleaner could be an erotic metaphor, sucking in the male sexual organs.

One interpretation is that this hints at the possessive nature of the speaker, insinuating a that he wants to set her a trap, a point of no return. Once things get sucked into the vacuum cleaner there’s no gettingg out.

Finally, the dust could be signalling drug abuse. Love and drugs are linked; both involve control of the user and can cause terrible damage.