Question:
Can a person wash his nose with a syringe on Yom Kippur? Can he swallow this liquid ?!
Answer:
Since he is not permitted to swallow the water he can only wash his nose in a way that no water will penetrate into his throat.
Sources:
O:CH 612:5 & 6, ibid 613:1 & 4 Mishnah Berurah 2 &11,
