I think that fish cleaner incident was actually investigated as a murder. Lemme see if I can find the article:
“As this is an active investigation, I cannot go into any details at this time regarding the case,” homicide detective Teresa Van Galder told the Free Beacon. In an interview, Wanda Lenius told the outlet that her decision to drink the cleaner with her husband was “a spur of the moment thing,” and that they ingested “one teaspoon and some soda” each — at least four times the lethal limit.
The Beacon also reported that friends of the deceased man were skeptical that he would knowingly consume fish-tank cleaner”
https://news.yahoo.com/amphtml/woman...133613382.html