After using my vacuum cleaner for 15 minutes, I started to notice a strong smell, it's not a burnt smell, and the vacuum cleaner seemed to still work, although I turned it off immediately. This has happened 2 times. The bag inside isn't full, and the vacuum cleaner isn't hot at all.

How likely is it that a malfunctional vacuum cleaner will burn the fuse or affect the circuit of my house? I am not worried about breaking my vacuum cleaner itself, just worried about causing other harms.

Thanks.

Do you have any pets?

If it's an upright check the belt and the brush.

Thanks. No I have no pets, I did check the belt and the brush and couldn't see anything. Will I risk breaking other things (e.g. fuse) if I continue to use it? Cheers.

Unless the smell is coming from the outlet, then I'd rule out an electrical problem within the homes wiring.