I began to accept all the symptoms as something I want to allow to fully manifest in the body, without deciding whether something is good or bad.
In other words... when my nose starts to run, swell and the sinuses are tingling, I let the body embrace it fully, waiting patiently until this phase passes, responding to it minimally, e.g. blowing my nose. The only type of comfort I allow myself at this time is - for example, seeking a comfortable position, without any attempt to suppress the symptoms just because they are unpleasant.
During this time, I observe myself from within - I notice the emotions that sometimes accompany these symptoms - anger, powerlessness, helplessness, sadness ... and even though I feel like saying something to someone or doing something under the influence of these emotions, I DON'T SAY OR DO ANYTHING. Neither do I interact with anyone during such emotions nor do I distract my attention from focusing on feeling them in me as they dissipate on their own.