5 things to know Wednesday, May 17

WVLT 1. Investigators identify men killed in Whittle Springs shooting.

Officers from the Knoxville Police Department, Rural/Metro and the Knoxville Fire Department responded to a call of a shooting at 2806 Whittle Springs Road in Knoxville. The shooting left two males dead, one inside the house and one outside.

The men shot were identified as James Aaron Taylor, Jr., 26, and Courtney Deontea Gillette, 25.

Police responded to the scene at approximately 6:11 p.m. Monday after a female caller said that a male had been shot inside her residence.

2. Is your smart phone listening to you?

The days of searching for information are in the past; now, all you have to do is say something and have your smart phone overhear. If you have allowed your smart phone access to your microphone, it's collecting data based on what you say, which is why you could see adds popping up of something you were just talking about.

"It's not a human listening to your conversation," said Lacey Clark, Network Technician at TeamLogicIT. "They've created an algorithm, and this algorithm looks for key words that it can use to match to advertising."

Clark said before you download an app, make sure to read the fine print, and you should be shocked at what you're giving permission to.

"These little computers take in more information than you can even imagine," said Clark. "It's a sneaky advertising technique, but it's definitely an invasion of privacy."

3. Keeping your pets safe from snake bites.

Veterinarians at UT Veterinary Medical Center are warning pet owners that snakes are out and about and could be dangerous for dogs.

Julie Schildt, a criticslist and professor at UT Veterinary Medical Center said the most common venomous snake in East Tennessee is the copperhead.

"We see copperheads most commonly," said Schildt.

Carroll Byrd of Loudon County had a dog that died from a snake bite a few years ago, and since then she's been keeping a close eye out for her other dog Luna.

"There's a lot of snakes and wildlife here. I try to be careful because I know they like to come out at night," said Byrd.

UT's small animal care hospital said the venom from a snake bite can cause severe inflammation and tissue death. There are also a lot of factors in how the venom affects the victim, such as the type of snake.

Schildt said the two most common snakes in East Tennessee are copperheads and the Timber Rattlesnake. The age of the snake also determines how strong its venom is.

For dogs, the most common bite areas are on the face and legs.

UT Veterinary Medical Center said when a bitten dog comes in for treatment, veterinarians provide pain medication and have anti-venom available for severe cases.

"A bite can affect the heart, the respiratory system, the brain and that stuff can happen immediately," said Schildt.

Schildt also said of all the dogs she sees, it's rare that a dog was bitten while on a leash with its owner.

4. Air quality alert issued for Wednesday.

A code orange air quality alert is in effect for the Knoxville area on Wednesday. This means it may be unhealthy for sensitive groups including those with lung disease, older adults and children.

5. How much is too much caffeine?

If you're like many people, you enjoy a cup of coffee or even an energy drink every once in a while. But how much is too much?

On Monday, a medical examiner ruled a caffeine overdose killed a South Carolina teen. The 16-year-old had a large latte, a Mountain Dew and an energy drink in the span of two hours.

Since caffeine affects everyone differently based on tolerance and weight, it's tough to know where to draw the line, but a Knoxville dietitian says there's a good rule of thumb.

"So the average adult that is considered healthy can have up to 400 milligrams of caffeine in a day, but that needs to be spread out over an entire daytime period," Dietitian Katelyn Bianconi said.

In practical terms, the average cup of coffee has about 90 milligrams of caffeine, a 12-ounce Red Bull, just over 110 milligrams.

Bianconi said the case in South Carolina was more about the timing than quantity, and had the boy spaced out the drinks, he may have survived.