YouTube series reviews the most disgusting hotel rooms in the US

YouTube series, Another Dirty Room, reviews the most disgusting hotel rooms in the US.

Blood stains, vomit and unidentified bodily fluids. No, this is not the description of a crime scene, it is a motel room.

A room at the Swan Hotel in Maryland USA, to be specific. And it is the latest - and most disgusting - motel room reviewed by Another Dirty Room.

THE MOST HEINOUS ROOM THUS FAR!! TONIGHT AT 7PM (ET)!! #ANOTHERDIRTYROOM pic.twitter.com/e8f5hca7wj

— Dan Bell (@thisisdanbell) May 24, 2017

American filmmaker Dan Bell, along with two of his friends, started the YouTube series Another Dirty Room in November 2016. It features them travelling to the cheapest - and most disgusting - hotels around the United States.

The series involves the trio using a number of different products and tools to test out a room's hygiene. One of their favourite tests to do is a luminol test, which shows up any blood that may be in the room.

The latest episode, Episode 11, shows Bell and his team visit the $40 per night Swan Motel, which Bell called the "the most heinous room thus far".

It features a filthy mattress, vomit, an insane amount of blood on the walls and floors, and used cotton buds in the bathroom.

In the episode, Bell describes it as a "murder scene".

And viewers were just as shocked. The episode has been viewed more than 560,000 times on YouTube and has attracted more than 2200 comments.

One viewer is certain the motel has been used as "drug den".

"It's a heroin drug den. The blood on the walls and ceiling, and the vomit, are signs of it," they wrote.

"That is probably the worst place, so far! But love to see the horror of it all!"

Others were concerned about the safety of Bell and his friends for stepping foot in the room.

"You guys have for sure contracted a terminal illness from the air in there," wrote one commenter on YouTube.

"I wouldn't have gone in there without a hazmat suit and several cans of Raid and Lysol," another wrote.