我鼻子堵了。Wo3 bizi2 du3 le. My nose is blocked up.
Can also mean to suffocate or feel oppressed, ex:
胸口堵得慌。Xiong1kou3 du3 de huang1. Feel a tightness in the pit of your stomach.(Xiongkou is pit of the stomach - huang is panicky or tightness)
心里堵得难受。Xinli1 du3 de nan2shou4. Have a load on one's mind. Xinli is mind/heart and nanshou is feel pain or suffer. So the mind is blocked by suffering.