On 18 May, 19:11, "The Medway Handyman"
wrote:
New one on me, anyone heard of this effect before?

Yes, common. Easiest (partial) fix is a mains-powered ioniser with a
good earthed plate in front of it. This catches the crud, in
preference to random furnishings.

Otherwise one with a fan. These keep the ions inside the case,
discharging them at the outlet grille. Doesn't have the same "sea
breeze" effects, but they work as electrostatic air cleaners.