Arizona flight passenger goes viral after leaving unmarked powdery substance in luggage, TSA inspects her bags

An air traveler's recent mistake led to her luggage getting flagged by the Transportation Security Administration (TSA).

"I opened my luggage and had an inspection tag on it, and everything looked normal until I got to my bag of fiber, which looks like it has been rummaged through because this is not how I packed it," McKay said in her viral TikTok video.

McKay realized it was her clear bag of "the powder we travel with as millennials" that might have raised some concern with security, according to her video.

What TSA found was a bag of powdered fiber McKay packed in her luggage, she said.

"I hadn't realized how goofy that was going to look and did it mindlessly. It wasn't until I opened my bag and realized how bad it looked that I knew I had messed that one up," McKay told Fox News Digital.

The card McKay found in her bag was a "Notice of Bag Inspection," which notified her that an agent had to physically inspect her bag after a screening.

"TSA may inspect your checked baggage during the screening process. If your property is physically inspected, TSA will place a notice of baggage inspection inside your bag. This is to inform you that an officer conducted an inspection of your property," according to TSA's website.

She said she knew that the fiber was not banned from the flight, so she didn't think twice about bringing it along.

"I knew it wasn't a banned substance, but I also wasn't concerned with losing it. If it was gone, I was going to be able to simply buy more. It didn't cross my mind that it could have caused some questions," McKay added.

TSA was able to pack her bag back up after the powder had passed inspection, but agents still needed to notify McKay that her bag had been looked through.

"It is just nothing more than a notification that a TSA inspection had to occur with a checked bag and then, presumably, if all security issues were addressed, then everything would be closed back up and no issues," a TSA spokesperson told Fox News Digital.

McKay said she found the whole incident to be a "goofy snafu" and is laughing at her slight error.

Other social media users appeared to laugh alongside her, while others shared their TSA mishaps in the comments section.

"Time to switch to fiber gummies," another user shared.

Others recommended labeling the bags with a marker, as some sort of identifier.

TSA does not prohibit someone from traveling with powder-like substances, but there are certain rules in place.

"Powder-like substances greater than 12 oz./350 mL must be placed in a separate bin for X-ray screening," TSA's website says.

"They may require additional screening and containers may need to be opened. For your convenience, we encourage you to place non-essential powders greater than 12 oz. in checked bags."

After McKay shared her video on TikTok, where it garnered 1 million views, Benefiber sent her individual packs of the powder to avoid any future snafus, McKay said.