Electroluminescent wire and EMC
EL wire drivers are low power, relatively low frequency devices that aren't designed to emit radiation. Even unintentional emissions (which are honestly likely) are going to be low power and well, well below the frequency threshold they'd need to be ionizing (and therefore dangerous). EMI regulations in that band are about interference with other people's electronics, not biocompatibility.  You'd have a higher cancer risk from walking outside in sunlight, or eating a piece of processed meat, or missing a night's sleep.