You googled it, so let's answer it properly - no brand fog, no "stay fresh" language. Do period underwear smell? Short answer: they should not. If they do, one of three things is going on, and all three are fixable.
Why smell happens at all
Menstrual blood itself is nearly odourless when it leaves your body. Smell develops when blood sits in contact with air and bacteria for too long - and when the fabric it sits in holds on to those bacteria wash after wash. That second part is the bit most brands do not talk about, because it is about what their product is made of.
Reason 1: the fabric
Many period underwear rely on synthetic fibres and chemical treatments - including biocides added as "odour control". Here is the uncomfortable truth about that: a biocide finish masks the symptom while the synthetic fibre keeps feeding the cause. Polyester holds odour compounds; washed at 30°C, they never fully leave.
Our answer is different: organic cotton and Lenzing lyocell, no biocides, no chemical odour treatment, no PFAs. Natural fibres release bacteria in the wash instead of hoarding them. Nothing in the fabric pretends. It just gets clean.
Reason 2: the wash
Most period underwear cap out at 30 or 40°C because their membranes and treatments cannot take more. That is often not enough for a fabric that meets blood twelve times a year.
THE SAVER pads wash at 60°C - the temperature laundry science actually considers hygienic - and survive it over 200 times. That is the whole trick: you do not need odour chemistry if your product can handle a real wash.
Reason 3: wear time
Any product smells if worn too long. Change when it feels right for your flow - with a click-in system that takes seconds, there is no reason to push it.
The honest bottom line
Period underwear that smells is not a personal failure and not "just how it is". It is a materials decision someone made at a desk. Ask any brand two questions: what fibre, and what temperature. The answers tell you everything.