Thanks for your query.Based on the facts that you have posted it appears that you have been taking nursing care of 88 years old lady and her urine and all the cloths ,dippers are of a strong smell .
This is due to smell of urea and is likely to be due highly concentrated urine.
Please give her more water so that urine will be dilute .
Please wash her cloths and other inner wares ,bedsheets etc in hot water mixed with antiseptic lotion like Dettol
Clean the entire room with disinfectant like Phenyl.