Complaints about cannabis smells?

I have a long term tenant in a block of 8 Victorian flats. The parking and garden arrangements mean the residents can easily see into the ground floor flats as they pass.

My letting agent has had 5 complaints over the last 3 months. One neighbour phoned once to say she could smell cannabis from my flat. Another man has made 4 anonymous and increasingly irate phone calls. In the last call he said he can hear “buzzing noises” and claims there might be a cannabis farm in operation.

We only managed one inspection in 2020 in July and all was fine. My letting agent called the Police for advice after the most recent complaint, but they say there is no evidence to merit a search warrant and they don’t intend to do anything.

My question: should I do any more? I do not want to harass my tenant and when we can resume inspections, I will be able to check if there is any damage from illicit horticulture. I am concerned about potential safety hazards, and will bring forward the EICR inspection due in 2023.

I’m interested to know if anyone has had similar challenges and has any suggestions.

Thanks.

Pamela