How can I meet or talk to Emergency Preparedness Liaison Officers who are connected to FEMA to support COVID-19 readiness?

I believe you're coming it at it from the wrong angle.

If there is a requirement for your good or service, it would be on Federal Business Opportunities FedBizOpps on line as an RFP, RFQ. Now SAM.gov...just migrated. https://beta.sam.gov

If you are trying to sell it and FEMA doesn’t know about it, two routes. in disaster relief there are Emergency Support Functions where the lease coordinating Federal Agency goes to for support. Usually, generally, nearly always it is FEMA. There are a few where FEMA is not.

Under ESF3 USACE has primary agency contracting responsibility. https://www.sam.usace.army.mil/Business-With-Us/Contracting/Emergency-Contracts-ACI/

Under ESF8 US Dept Health and Human Services has primary responsibility for public health and backing up the medical system. https://www.hhs.gov/grants/small-business-programs/index.html

Your seeking a contract relationship which EPLOs and REPLOs can’t do. The military rep (Defense Coordmating Officer DCO) in each region is to coordinate T10 response to state requested needs.

The President declared a national emergency, which is not the same as a federal disaster declaration. So FEMA is not responding with DHHS in heavy. And the federal agencies only go in at the request of a state and a federal disaster declaration. I'd start with HHS Small Business Office.

I used to be a FEMA certified Operations Center Manager. Additionally, my Navy Regional Ops Center supported Fukushima and Haiti Earthquake. Bottom line, if you are not already on a Basic Ordering Agreement for essential and vetted supplies, you are just one of thousands of the "noise" throwing sand into the gears at the wrong spot. Showing up after the event starts isn't helpful to the people providing services. Military Liaison job is to coordinate the provision of existing military support. They don't do R&D, test marketing, product evaluations, or clearinghouse activities for the thousands of "noises" out there. Doing any of that means they aren't doing their job and are becoming part of the problem. That would get me mowing some butt lawn if I caught one of my NEPLOs doing that. You're trying to insert yourself into the function/process at the wrong spot. FEMA isn't a medical device evaluation organization either. Health and Human Services would be a closer fit, but I don't know if you'd be considered noise there as well. You'll have to be a bit creative if your product is actually viable and helpful. The States have implemented programs where small business can provide information on how the pandemic is affecting them. Telling the state you have something but don't know where to go is one option. Remember, you have to convince someone who isn't necessarily the sharp knife in the drawer you're worth spending time over. BTW, say you have something like a cell phone sized device that increases O2 percentage. It isn't viable for treatment as it falls into the make them comfortable and watch them die protocol. My wife is a retired RT that spent over 40 years in the pulmonology support game. It isn't about O2 percentage. It's about O2 getting into the lungs and being absorbed. COVID is frequently resulting in plug pneumonia which has to be mechanically removed by doing a bronchoscopy under fluoroscopy. Ventilators have their role, but are just one piece of the treatment solution. People are media hyped on beds and 100,000 ventilators. The talking heads are ignoring everything else like ~13,000 pulmonologists, numbers of certified support RTs, etc. They are already very busy taking care of flu, COPD, you name it. 80% of the ventilators are doing this normal stuff before COVID hit. A limiter may be the scopes which tend to be finicky and break with heavy use. We tend to confuse things as being equal to capability. Not true. Things that can be applied at the right time and place with adequate staff and support is capability that will actually result in something. Lots of chain links that can break.

DHS, FEMA, States, Army North, NORTHCOM, HHS, Surgeon General, CDC.