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does anyone know about this?

so does anybody know about this one specific smell? It's like metallic but in a very specific way, like almost burnt metal but different??? The smell a motor in an old plastic toy makes it you turn it on with the motor exposed. Has anyone experienced this? Am I going insane? My living room smells like this now and I don't??? Know why??? Help man I can usually never smell things unless I practically already shoved the thing into my lungs, so why is this happening? Like what.