I don't know about making you sneeze but if your nose is blocked steam will help.
Take a long warm shower when you get home. The steam will help open up your sinuses and you'll feel better. Alternatively fill a bowl with boiling water and put your face near it. Cover your head and the bowl with a towel to try and trap the steam.
Also have some warm tea. if possible get some lemons and make qawa, that always helps me. Finally, when i'm not well, i ask the wife to make some gosht, keep it very spicy, had a few extra rotis, and go to sleep. InshaAllah tommorow you'll feel fine.
Also take a paracetomol before you go to bed.