Wow! Calm down! There are many contracts done in Dollar, Peso, Brazilian real, Nicaraguan córdoba, Tongan paʻanga, Cape Verdean escudo, Portuguese escudo and none of the involved countries ever got any of the others into legal trouble about the $ sign.
$ (disambiguation)... how does that even work? I mean "OMG you scammer, I obviously meant Nicaraguan córdoba!". Imagine people in Thailand start using BTC!