Sochi hotel problems continue to persist and athletes and guests for the Games are suffering the effects of dirty water and rundown hotel rooms long before the actual Olympics starts.

Sochi hotel problems are perhaps the most talked about part of the Olympics itself today, after media men, guests and athetes took to Twitter to complain about the state of the hotel rooms in the Russian city.

Aside from the Sochi hotel problems however, a new terror has emerged in the 2014 Winter Olympics: bombs disguised as harmless toothpaste.

The U.S. Department of Homeland Security distributed advisory notices to airlines Wednesday about how bomb-making materials could be smuggled onto flights inside toothpaste tubes, according to NY Daily News.

The warning, sent "out of an abundance of caution," were distributed a day before the gala opening ceremonies at the Winter Olympics, where safety remains a paramount concern.

“DHS regularly shares relevant information with domestic and international partners, including those associated with international events such as the Sochi Olympics,” said a a Homeland Security official.

The official added that U.S. anti-terrorism forces were “not aware of a specific threat at this time” — and described the airline missive as a routine communication.

However, Homeland Security Committee chairman Michael McCaul (R-Texas) contradicted this, after describing the toothpaste threat intelligence as "specific" and "credible" in an interview with CNN.

Scrutiny was focused on flights into Russia from other European nations, McCaul added.

Russian authorities prohibited passengers in January from taking any liquids aboard flights headed for Sochi on the Black Sea. A 3-ounce limit on liquids and gels including toothpaste was imposed by the Transportation Security Administration.

Athletes and guests who arrived in Sochi for the Olympics, which has already cost Russia US$51 billion, continue to complain about ramshackle hotels and rooms lacking essentials such as light bulbs, door knobs, chairs and TVs.

Other visitors said their rooms had no water, and that when the faucets did work, only suspicious-looking yellow liquid came out of them.

Organizers for the Games were criticized for their policy of poisoning dogs in the city.

The killing "stains the snow of Sochi with blood," said one Scottish member of Parliament.

A spokesperson for the International Olympic Committee clarified that only sick strays were being put down and others are being "taken into custody" so they wouldn't cause disruption.