Smelly water from fresh water tank
do not add chlorine to the tank. you will create aluminium chloride which over time will cause you more trouble.
i have an aluminum tank. cleaned and drained it as you did. the odor free result was short-lived. it occurred to me the odor was residing in the lines. the remedy for me was to pickup the chlorine bleach water solution from a bucket , bypassing the tank-
i run the solution thru the lines once a month and have had odor free water for the last 3 months.