Viral tracheitis how long contagious for?

Like a cold or flu: Like a cold of flu, one should expect a viral tracheitis or viral laryngitis to be contagious from a couple of days before the start of symptoms through 5-10 days of symptoms. The period of contagiousness in one individual person is unpredictable, so if somebody needs to be extra safe, then he should stay away from the sick person until a couple of days after all symptoms are gone.