Hi welcome to Health care magic forum.
Thanks for calling H.C.M.Forum.
You have used different cleaning liquids for 8 hours, got your eyes watery, hazy, irritating, head ache, chest congestion and cough
. cough recovered a little after taking milk.
it could be a chemical action of the chemicals in the cleaners or may be due to allergic reaction
As you describe your condition, if you can get O.T.C. products, you will be fine with cough syrup, and eye drops.
If there is any possibility to consult a doctor or no response with the said medicines consult a physician for diagnosis and treatment.
Wishing for a quick and complete recovery.