Fine dust coming into air when used

[billythefish]

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I think that my trusty DC04 may be emitting some fine dust as it is doing its thing. (It's hard to tell, but my other half reckons that it is doing so). Is this likely / possible and if so, what's the likely culprit? thanks in advance 

[MVacs]

You've changed both filters?

[billythefish]

thanks - I checked them and they needed a good clean. Hopefully this will do the trick. thanks again