Do you have a smart watch with a magnetic band? Do you take it off while using your mac to prevent damage? If so read this one post that may worry you.

I always take off my lg watch with the magnetic band to prevent damage (Null, say something new dammit!). It was sitting on the left side of my mac and normally sits a fair distance away. Well someone needed my help and the watch got too close to my mac (the front left side) and my screen just turned black almost immediately. Wtf happend? It fixed itself almost as soon as I moved it but holy shit did my heart drop.