Commuters have been stunned after sickening video emerged of the horrible state of train seats.
One daredevil commuter took it to himself to find out the amount of dust stored in the seats of one train in Canberra, Australia.
Video shows him repeatedly whacking the mouldy-looking upholstery until a cloud of dust starts spewing out from the seat.
The fine dust then vanishes in the air within seconds.
The horrified commuter then the footage on to Reddit and wrote: "They really need to vacuum these train seats."
Web users were left disgusted by the horrible conditions of the seats used by thousands of passengers daily.
One user wrote: "Do the same thing to the bus seats and you'll see it too. Not just limited to the trains, but buses too."
Some joked as they suggested commuters to 'enjoy the tuberculosis' or 'enjoy your chest infection'.
Transport authority NSW Trainlink responded said regularly cleans the trains but dirt will occur due to the number of people who use public transport.
A spokesman said: "NSW Trainlink has a rigorous cleaning program where our trains are cleaned on a daily basis.
"We also have staff across the network who clean our trains throughout the day as well as frequent deep cleaning of our seats each week.
"With an average of more than 3.4 million intercity services each month, there are instances where common dirt and grime do occur on our trains.
"We encourage customers to let our station staff know immediately when there is a cleaning issue and we will attend to it as quickly as possible or call our feedback line on 131 500."
Most British public transport use wool moquette fabric on the seats as it is flame retardant and more durable than a flat woven cloth.
It resists stains as there's no flat surface, but it could hide small particulates that happen into it.
Swab samples taken on the London underground seats two years ago revealed a large presence of E.Coli, a bacteria which is found in human and animal faeces.
