Not my field

A bloody awful evening of coughing and spluttering so it'll be back to the doctors for me tomorrow morning. Didn't feel like leaving the sofa but we'd left Mrs Smith's car in the village so ran her down there to pick it up before she went to see her Mum. Stopped off outside the house on the way back to grab a quick blip and got into a very lengthy chat about bike noises. Not really my field of expertise but I made sympathetic noises and promised to have a look online for any suggested remedies.