Berakhot 25

Can one recite shema if there is feces one's body or in the area? What if the feces is being passed by? It there a different if the feces is not moving? If there is a foul odor from feces, does one need to move away from the feces or also from the odor? Until when is urine problematic - what if it is dry? How dry does it need to be to not be an issue for reciting shema? How can one say shema in the mikveh? Does one need to cloudy up the water? What types of foul smelling water can be fixed up by adding more water to it? How much water needs to be added? One cannot say shema in the vicinity of a utenstil used for collecting feces or urine. What does one do in order to allow one to say shema if there is a utensil there - three opinions are brought.