I have synaesthesia as well, Brussels sprouts taste pink, swede tastes foul green, violins sound yellow, clarinets sound red, loud banging noises produce white light, you get the picture. My misophonia has become lot worse as my workplace has employed a continual sniffer. Having to quit my job as employer refuses to admit misophonia exists. I would say the two conditions go hand in hand, I also have slight number dyslexia and suffer from migraines