This incident happened recently in North Texas.
A woman went boating one Sunday taking with her some cans of coke
which she put into the refrigerator of the boat. On Monday she
was taken to the hospital and placed in the Intensive Care Unit. She
died on Wednesday. The autopsy concluded she died of Leptospirosis.

This was
traced to the can of coke she drank from, not using a glass. Tests
showed that the can was infected by dried rat urine and hence the
disease Leptospirosis.

Rat urine contains toxic and deathly substances. It is highly
recommended to thoroughly wash the upper part of soda cans before
drinking out of them. The cans are typically stocked in warehouses
and transported straight to the shops without being cleaned.

A study at NYCU showed that the tops of soda cans are more
contaminated than public toilets (i.e).. full of germs and
bacteria. So wash them with water before putting them to the mouth