I would say because of the vibration of the bus on the rode make your nerve reacts then the hyper sensibility of your nose because of the inflammation but you are so irritated that you don’t have any more sensibility but by telepathy you give people your symptoms , everything that interact with your nerves gives you theses patm symptoms
Test with headset and record, you will see that it also happens, I do not know, that's what you notice. Be more objective, you traveled in a closed Collective, in a train, in a truck? Try to give details so that the question is understood.