PRINCE William joked that a room full of illegal cannabis has “quite a good, strong smell” while on a tour of Heathrow Airport.

The Duke of Cambridge visited the Royal Mail’s Internation Logistics Centre at the London airport to learn about wildlife trafficking … but was surprised by the overpowering smell of illegal cannabis which hung in the air, The Sun reports.

As part of his work with the charity United For Wildlife, Prince William was shown around the depot full of illegal drugs, weapons and wildlife which had been seized from passengers entering the country.

Apologising for the overwhelming marijuana scent, Border Force officer Steve Harrington asked the Royal to “excuse the smell” when they walked in.

But taking it all in his stride, Prince William joked that “it’s quite a good strong smell.”

And considering the 545 drug packages that were sitting in the Royal Mail room, the Duke of Cambridge then added: “We had better get out before we have a drugs test!”

Explaining how all the illegal drugs had been seized in the past alone, the Border Force officer revealed that the “large seizures of cannabis” come from “the United States, where it is legal in some states.”

Additionally, the Prince was shocked by the 1,657 weapons that were captured being smuggled into the country in the past four weeks,

He said: “That is a staggering amount of weapons in one month. That is quite shocking.”

During his tour of the depot, Prince William was also shown four wildlife packages which have been seized this week, including the snakeskin of a rock python.

The Duke said: “I would not like to have met the snake wearing that.”

Along with examining the smuggled goods, Prince William watched as Border Force officers operated X-ray machines and sorted through mail to spot suspicious packages.

Ahead of the Duke’s visit, senior manager of Border Force Clive Perry who conducted the tour revealed the smell of cannabis is “something you can’t ignore.”

He added: “I think my officers have got immune to it in there, to be honest. We process it and move it out as quick as we can.”

This story originally appeared in The Sun and is republished here with permission.