In order to really help you, we need more information. Was this alloy or carbon mountain bike air and, very importantly, does the road bike run on Campagnolo or Shimano air? If it uses Sram, then there's no hope; this is totally incompatible with mountain bike air and you will have to scrap the tyres (incineration is the safest way) and disinfect the entire bike as well as the entire bike shed. You may also have to shave off your beard, just in case stray particles of mountain bike air have become trapped in it.