If you suffer from a respiratory allergy, is it advisable to drive with the vehicle's windows open?

Allergic symptoms in drivers, which resemble a cold, can affect distance calculation and concentration, especially during sneezing episodes. Antihistamines, occasionally used to relieve these symptoms, can cause drowsiness (third-generation ones being safer than first-generation ones). It is crucial to avoid mixing antihistamines with other medications.
Some advice given to drivers who suffer from allergies is: try not to open the window, do not turn the air conditioning up high, keep the cabin and ventilation ducts clean, do not consume alcohol, do not make excessively long journeys (consult the doctor), wear sunglasses, avoid driving at dawn and through humid areas, do not self-medicate.